Apparatus for setting piles.



F. L. PRUYN.

APPARATUS FOR SETTING PILES.

APPLlcATloN Flyin ^uG.5.19|3.

Patented mig. 13, 1918;

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F. L. PRUYN. h APPARATUS FOR SETTING PILES.

APPLICATION lFILED AUG. 5. 19| 3.

Patented Aug. 13, 1918.

2 SHEETS-SHEET 2.

vlUUTED STATgisarnNr omen.

FRANCIS L. PRUYN, or NEW YORK, N.l Y;

' 'APPARATUS Fonsn'r'riive PILES.

To all 'whom t may concern:

, Be it known that I, FRANCIS L. PRUYN, a citizen of theUnited States, residing at New York, in the county and State of New yYork, have invented certain new and usefulI-mprovements inApparatus for Setting Piles, of whiclithe following is aspecification.

.My invention relates, more particularly, to the settingl in the ground of prepared concrete piles, the method of which consists in penetrating the ground withfa driver to make a hole, thedriver beingv accompanied in its downward movement by an outside shell or envelop to hold the ground; then withdrawing the driver and introducing into the outside shell a pre-molded pile, and, finally, in withdrawing the outside shell,

preferably, in sections.

In the accompanying drawings, Figure l is a central longitudinal section of one lform of my device in driving position. Fig. 2

shows the driver removed and a premolded pile insertedin its place. Fig. 3 shows a filling of grout between the preparedpile and the outside -shell or envelop. is in part a section andin part an elevation of the finishedpile.` Fig. 5 is a modication of Fig. 1. Fig. 6 is the modified device after the driver has been removed and a prepared `vpileinserted and resting upon grout previously deposited in the driving point. ',Fig.-

7 shows the same after grout has been inserted to lill the space between the pile and the outside shell. Fig. 8 shows the completed pile resting upon the driving pointl after the outside shell has been removed. Fig. 9 is a top plan view of the driver and outside shell.

Referring to the drawings in detail, A is the outside shell, or envelop, which, as heretofore explained, is used to hold the ground as the driver proceeds downwardly and also after the latter is withdrawn. Preferably, it is made in longitudinal sections, as shown in Fig. 9, with longitudinal flanges A A which are riveted to or made integral with the outside shell. B indicates the driver, the stem of which B for lightness and convenience in handling, is shown as a tube, although it may be made solid. In the stem are grooves B2 into which the flanges of the outside shell are set for the purpose of binding the sections of the latter firmly together.

`ISIS A thrust-plate Ba is welded or otherwise Fig. 4

Specification of Letters Patent.4 Patented -Augg 13, 1918i, Application inea August 5, 1913. seriai'ivo. 783,062.

securely attached to the kinsidev'of the stem near its lower end,.having a depending por- .ton B4 extending to the end of the stem,

for strengthening the latter, while the portion aboveis reinforced by reinforcingplates B5. `The driver B isy provided with thrust-plate B4 and the [end of the outside v shell. The position in the stem'of the thrustplate, Ybesides making a socket forv the head of the driving-point for holding the latter to its'work, adds great strength Vto the lower.:

portion of the stein.

In the present instance I have shown the driving-point C made of a metallic shell filled with concrete, but it may be lmade entirely of concrete, or it may be entirely me-r tallic-,

Upon theiipper portion Aof the driver and overlapping the outer shell I have shown a driving-cap D, which maybe constructed in anyV suitable mannerfor 'the purpose of receiving the impact of thedriving weight.

The niethod'herein shown and described has-several advantages over former methods. When thework Yisldone with a single tube, as heretofore, it must be depended upon not only to drive, but to. hold the ground as well; and it cannot be removed until the pile is set. Consequently, such a driving tube cannot be reinforced to correct its tendency to buckle, as struts or braces would interfere with the placing of the piles. Moreover, to be able to withdraw, in longitudinal sections, the itube used to hold the ground, is an advantage, as the Vfriction of the ground against it is so great, at times, that it is nearly if not quite impossible to withdraw it as a whole.

Referring to Figs. 2, 3 and il, E is a premolded concrete pile inserted within the outer shell after the driver has been withdrawn. E E indicate a filling of grout between the pre-molded pile and the outer shell.

In Fig. 5 the stem is made conical, and the metal driving-point is made hollow with an annular flange C3 for receiving the end of Ithe outer shell, while the end of the stem B rests in the lower portion of the drivingpoint. Y

In Fig. 6 E indicates a pre-molded coneov crete pile which has been inserted in the outer shell after the removal of the driver, some of the plastic concrete which had previously been introduced inside the drivingpoint being raised between the pile and the wall of the outer shell, y

In Fig. 7 E E indicates the plastic Concrete filling the space between the outer shell and the pre-molded pile. 'The completed conical pile is shown in Fig. 8, resting in the driving-point, the outer shell removed. One advantage of the conical form is that the sections of the outer casing are more readily removed from the ground, oWing to the fact that as soon as the removal of the tapered section is started the contact the ground diminishes along its entire length.

Vhat I claim is:

l. The combination with a driving inember of a surrounding shell having a :plurality of longitudinal sections, holding means extendingl along the edges of said sections and means extending longitudinally of the driving member and coperating with the holding means on the sections for releasably holding the sections together.

The combination of a driving inember and a surrounding shell, the latter having a plurality of longitudinal sections, flanges extending along the edges of the sections, said driving member having grooves for holding said fianges and` thereby preventing displacement af the sections,

3. The combination with a driving-tube of a surrounding shell having a plurality of longitudinal sections, means extending along the edges of said sections, andmeans extending longitudinally of said driving tube and coperatingw'ith the means along 'copies of this patent ,may be obtained for five cents each, 'by addressing the the edges ofthe sections forl releasably holding the sections together.

4, The combination with a driving-tube of a surrounding shell having longitudinal sections and flanges extending along the edges thereof, said tube having grooves into which said flanges are set to bind the sections together.

.5. The combination with a driving head of a driver and a surrounding shell having a plurality of longitudinal sections, interlocking means consisting'of flanges extending along the edges ofsai'd sections and grooves' extending' longitudinally ofl lthe driver-into which'n said'iianges lare set and which coperate with the'liead to prevent displacement of the sections.

6. In a device of the class described, the combination offa driving-point,V a drivingtube having a thrust-'plate' in its lower end with a. depending portion adapted to -prevent Vbuckling oi' the lower end of the tube and to drive'the point,` and a surrounding shell having a plurality of longitudinal sections, means extending along the edges of said sections', and means extending longitunally of said driving tube and coperating with the means along the edges of the sections or releasably -holding the sections together.

In witness whereof l have hereunto setlmy hand, in lthe presence of two subscribing witnesses, at New York, in =`the` county vand vState of New York, this le9th`day of July,

FRANCIS L. PRUYN. In presenceof- RALPH JULIAN Sacnnns, BERTHA M.' KELLY.

vllonignisvsioner of L Patentvs,

Washingtonyl). 0. 

